SECURITY MANAGEMENT DEVICE, COMMUNICATION SYSTEM AND ACCESS CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To prevent personal information from being stolen by pharming. SOLUTION: A security server 50 checks whether or not a combination of a domain name and an IP address of a WWW site 30 to be accessed by a PC 10 is registered in an accessible DB 55a or an inaccessible DB 55b. The security server 50 also checks whether or not the combination is registered in any of secure DNS servers 40 registered in a secure DNS DB 55c. The security server 50 controls an access by the PC 10 to the WWW site 30 using a result of the checks. COPYRIGHT: (C)2007,JPO&INPIT